Fixed 'identifier' to skip subdirectories, remove old tarballs if they exist,...

Fixed 'identifier' to skip subdirectories, remove old tarballs if they exist, and tell user which files are missing the identifier

Makefile

@@ -92,10 +92,11 @@ static:
 	cppcheck --enable=all --suppress=missingIncludeSystem \
       $(SOURCES) *.h *.hpp
 
-# make identifier - will ensure that all source code and header files include
-#                   the project identifier
+# make identifier - will check to ensure that all source code and header files
+#                   include the project identifier; skip subdirectories;
+#                   also removes old submit tarballs, they are outdated
 identifier:
-	@if [ $$(grep --include=*.{h,hpp,c,cpp} -L $(IDENTIFIER) * | wc -l) -ne 0 ]; then echo "Missing project identifier"; exit 1; fi
+	@if [ $$(grep --include=*.{h,hpp,c,cpp} --directories=skip -L $(IDENTIFIER) * | wc -l) -ne 0 ]; then echo -n "Missing project identifier in file(s): ";echo `grep --include=*.{h,hpp,c,cpp} --directories=skip -L $(IDENTIFIER) *`;rm -f $(PARTIAL_SUBMITFILE) $(FULL_SUBMITFILE); exit 1; fi
 
 # Build both release and debug executables
 all: clean